Have you heard of the Lindy effect? Taleb's principle that age predicts future life: the longer an idea has survived, the longer it's likely to keep working. Jonathan Doyle takes it from ancient Babylon to the Instagram feed — why brains that took 4 million years to build now drink from a firehose of "latest things," why Aristotle's excellence-as-habit still outperforms this month's hack, what the Stoics got right about emotional mastery, and Roger Scruton's beautiful test of endurance: "Beautiful buildings change their uses. Ugly buildings get torn down." Plus the six-month cut from 90 to 75 kilos that used no craze at all — just patience, discipline and structure. Pay attention to the ancient paths.

"Durability is the only credential that can't be faked."

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